| | Gregory, SD | Iona, SD | United States |
| Expend. per Student | $22,056 | $28,992 | $15,905 |
| Educ. Expend. per Student | $12,664 | $15,049 | $13,142 |
| Instr. Expend. per Student | $7,685 | $8,155 | $7,999 |
| Pupil/Teacher Ratio | 11.74 | 10.44 | 16.23 |
| Students per Librarian | 2948 | 0 | 4573 |
| Students per Counselor | 335 | 140 | 530 |
| Grade School Educ. | 4.2% | 0.0% | 4.8% |
| Some High School Educ. | 7.1% | 0.0% | 6.3% |
| High School Educ. | 88.8% | 100.0% | 88.9% |
| Some College Educ. | 26.3% | 70.3% | 20.0% |
| 2 yr College Grad. | 9.3% | 0.0% | 8.7% |
| 4 yr College Grad. | 19.9% | 29.7% | 33.7% |
| Masters Grad. | 4.7% | 0.0% | 9.3% |
| Professional Degree | 1.8% | 0.0% | 2.2% |
| Doctorate Degree | 1.7% | 0.0% | 1.5% |